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HYDRAULIC DENSITY SEPARATION

THE

HDS-SERIES

Best Solution. Smart Recycling. doppstadt.com

HDS-S . HDS-M . HDS-L

HDS-M

compost screen oversize, wood stone mixtures such as construction waste, root wood, green waste

10 – 300 mm

20 – 50 m³/h

Yes

Depending on input

Semi-mobile

Medium density separation unit

High separation precision

Adjustable density separation

Plug and play

Integrated water circulation

Low running costs

HDS-S


10 – 150 mm

10 – 15 m³/h

No

Required separately

Stationary

Small installation area


High separation precision

High throughput

Plug and play

Robust

HDS-L


10 – 300 mm

bis 200 m³/h

Yes

Internal water treatment system

Mobile

Diesel-hydraulic drive

Compact design

Three functions in one machine

Integrated water circulation

Fast chassis up to 80 km/h


INPUT

PARTICLE SIZE

THROUGHPUT

INTERNAL WATER CIRCULATION

WATER TREATMENT

CHASSIS

ADVANTAGES

THE HDS SERIES Not one to run dry

dard sizes: S, M and L.

The difference between S, M and L lies

in the throughput capabilities as well as

in special features, for instance, an inte-

grated water treatment system, a

mobile chassis or a washing unit for the

light fraction. The machines are similar

in the way they carry out the density

separation, using a water bath with

upwards directed current.

Water is always used in the treatment

process when the products are sub-

jected to particularly high quality

requirements. This is the case, for

instance, if wind sifting cannot achieve

a precise enough density separation. A

sink–float separation system achieves

significantly more precise separation

by virtue of the small influence of the

face area of the particles. If the density

cut should be above the density of

water, an integrated propeller can be

used to vary the upwards directed cur-

rent inside the water bath. This causes

only those particles to sink to the bot-

tom of the tank that descend with a

higher relative velocity than the veloc-

ity of the upflow current. This way,

soaked wood or heavy plastic particles

are kept afloat and discharged as part

of the light fraction as well. Hydraulic

density separators come in three stan-

THE MACHINES IN COMPARISON The most important advantages

HDS-S Water-based density separation – quite small

WATER BATHThe water bath features an infinitely adjust-

able upflow current driven by a propeller

which makes material of a higher density float

so that it can be separated as part of the light

fraction.

SCREW CONVEYOR FOR THE HEAVY FRACTIONThe heavy fraction settling to the bottom of

the water bath is collected and discharged by

the screw conveyor. The heavy fraction can

also be showered by nozzles to clean it fur-

ther on its way through the screw conveyor.

• Compost oversize• Green waste• Wood stone mixtures such as: Construction waste, Root wood, Plastics and foils

material from the input, it is ready for

further processing, energetic utilization

or recycling. Just like its bigger broth-

ers, the HDS-S features an integrated

propeller to create upflow current in

the water bath. This enables separation

at a density cut above that of water. In

this way, for instance, wet wood or

dense plastic can be kept afloat in order

to separate it from stones. In addition

to the small footprint and high separa-

tion accuracy, a prominent feature of

Apparently the smallest separator in

the HDS series, is the ideal complement

for plants that already run their own

water treatment. The small, capable

machine blends into all kinds of existing

recycling plants. In combination with

the Gritbuster WT 250, it turns into a

one-stop solution for washing, stone

removal and density separation.

That is especially the case for mixtures

of light and heavy components. After

reliably separating unwanted mineral

the machine is its extreme endurance:

Depending on the input material, the

HDS-S is capable of producing 10 to

20 m³ per hour on an installation area

of just 17 m². The plug and play system

is easy and quick to start up thanks to

its integrated switch cabinet. As soon

as the water and electricity supplies are

installed and the machine is filled with

water, it is ready to go.

ROD CONVEYOR BELTThe floating fraction is discharged via a rod

conveyor belt with a length of 2,397 mm.

The floating fraction is separated from the

water flow on the rods similar to a rake

while the water flows through them and is

recirculated.

HDS-S in action

HDS-M Medium-sized water-based density separation

STONE SCREW CONVEYORThe heavy fraction sedimenting in the water

bath is discharged via a screw conveyor.

DISCHARGE CONVEYOR FOR THE LIGHT FRACTIONOnce it has been separated from the heavy

fraction and surface contamination, the

light fraction is dropped off via a belt con-

veyor at a height of around 2.5 m.

WASHING DRUMThe 6 mm mesh size of the washing

drum serves the purpose of drainage.

Friction between the material being

washed causes the removal of surface

contamination.

tling tank with continuous sediment

discharge, the process water gets recir-

culated in a closed loop. This way the

HDS-M can be operated without exter-

nal water treatment for several days.

Depending on input material, it reaches

a throughput of 20 to 30 m³ per hour.

The entire system includes an integrated

control cabinet and is ready for immedi-

ate use. Compared to the HDS-S, the

HDS-M has a washing drum in addition

The HDS-M separates input material

according to its density, using a water

bath. It is a very versatile machine. In

order to adjust the density cut of the

separation, an additional sifting effect

can be employed using upflow current.

The result: You can be sure of getting

perfectly separated fractions in the

highest possible quality, ready and

waiting for you to assign them to their

next use. Thanks to an integrated set-

to the sink–float separation.

The drum separates the light fraction

from its adhering surface contaminants

like soil or mud.

VIBRATING SCREENFloating substances which have been washed

off the light fraction in the washing drum are

discharged along with the water at the over-

flow and then separated with a screen.SLUDGE SCREW CONVEYORContaminations with higher density settle

to the bottom of the settling tank and are

discharged via a screw conveyor.

HDS-M in action• Compost oversize• Green waste• Wood stone mixtures such as: Construction waste, Root wood, Plastics and foils

VIBRATING CHUTEApplication of input material to the chute

needs to be controlled and continuous.

Water is supplied and the material passes

below a rubber curtain to be fully submerged

in the water bath.

HDS-L Water-based density separation – very big

UPFLOW UNITA propeller generates an upflow current

in the water bath, causing water to over-

flow into the washing drum. The density cut

of the separation can be varied using the

velocity of the upflow.

LAMELLA PACKThe lamella separator reduces the settling

distance of the sedimenting particles and in

that way enhances settling performance at

the same settling velocity. In other words:

the effective settling surface is much higher

than the actual surface of the settling tank.

STONE DISCHARGE The heavy fraction is discharged from the

water bath via a rod conveyor and a chute.

REAR CONVEYORThe rear conveyor used for discharging the

clean light fraction can be rotated around

a vertical axis by 180°. This means that the

machine does not have to be moved around,

and the tip of washed light product does not

need to be taken away that often.

veyor belt that can be rotated in the

horizontal plane by 180 degrees.

Sediments are removed from the wash-

ing water using a lamella clarifier, which

enables process water recirculation.

This reduces the need for fresh water

supply to a minimum. A screw conveyor

collects the sludge from the lamella

clarifier in a pump sump, where it is

pumped into a suitable container by

means of a sludge pump.

Thanks to the lamellas in the settling

The HDS-L incorporates three essential

process steps in one machine: stone

removal, washing and water treatment.

In the first step, the feed material is

separated from stones and other heavy

components using a water bath with

upflow current. A rod conveyor belt dis-

charges the stones via a chute. The light

fraction follows the water overflow into

the downstream washing drum, where

it is rinsed and drained. The clean light

fraction is discharged via a rear con-

tank, the settling area is increased to

50 m². Thus, depending on the wash

water composition and settling

behaviour a cleaning performance of

about 50 m³ per hour can be achieved.

The HDS-L is similar to a mobile fac-

tory: the system is able to reach a full

load of 200 m³/h. The whole machine is

built onto a high-speed trailer chassis

that enables flexible operation and

transport on site and from one site to

another.

WASHING DRUMThe light fraction is carried to the washing

drum by the water flow. Here, surface con-

tamination like dirt is removed as a result

of friction between material particles and

the addition of washing water.

• Compost oversize• Green waste• Wood stone mixtures such as: Construction waste, Root wood, Plastics and foils

HDS-L in action

150

0

157

5

3857 3220

4525

980

950

130

0

HDS-S

ISSUE DESCRIPTION DRN BY CKD DATE

SILTBUSTER LTD.UNIPURE HOUSE,WONASTOW ROAD, WESTMONMOUTHMONMOUTHSHIRENP25 5JA

TEL: 01600 772256FAX: 01600 775312

Project Title

S440569-front

150

0

157

5

3857 3220

4525 9

80

950

130

0

HDS-S

ISSUE DESCRIPTION DRN BY CKD DATE

SILTBUSTER LTD.UNIPURE HOUSE,WONASTOW ROAD, WESTMONMOUTHMONMOUTHSHIRENP25 5JA

TEL: 01600 772256FAX: 01600 775312

Project Title

S440569-front

HDS-S

Propeller drive (frequency controlled)

7.5 kW

Total width 3,878 mm

Total height 2,421 mm

Total length 4,358 mm

Stone screw conveyor diameter 950 mm

Stone screw conveyor length 2,276 mm

Loading height 1,500 mm

Loading width 1,260 mm

Discharge height, heavy 1,377 mm

Discharge height, light 1,607 mm

Light fraction conveyor length 2,397 mm

Light fraction conveyor width 968 mm

Weight 2,000 kg

HDS-M

Installed power in total (electric) 32 kW




Stone screw conveyor diameter 600 mm

Drum diameter 1,400 mm

Drum speed 23 min-1

Sludge screw conveyor diameter 200 mm

Total length of belt conveyor 5,000 mm

Total width of belt conveyor 800 mm

Vibrating chute feed height 3,078 mm

Vibrating chute feed width 1,513 mm

Light fraction discharge height 2,492 mm

Stone fraction discharge height 2,225 mm

Sand fraction discharge height 1,729 mm

Weight 7,500 kg

HDS-L

Type of driveDiesel hydraulic 90 kW/122 PS

Emission standard: Tier 4 i




Loading width 2,856 mm

Loading height 3,527 mm

Stone discharge 3,838 mm

Light fraction discharge 3,527 mm

Washing drum holes wahlweise

Washing drum diameter 1,800 mm

Washing drum height 4,700 mm

Rear conveyor length 500 mm

Rear conveyor width 800 mm

Rear conveyor pivot range 180 Grad

Rear conveyor centre distance 5,800 mm

Stone removal conveyor width 400 mm

Stone removal conveyor centre distance 3,000 mm

Water treatment tank volume 8 m3

Weight 18,000 kg

TECHNICAL DETAILS

ADDITIONAL OPTIONS

HDS-LHDS-S

HDS-M

• Auxiliary hydraulic connection 40 L/min, 180 bar• Fresh water pump with 50 m³/h• Biomass package with circulation pump piping and other supply nozzles• LED work lights• Spray hose• Remote control• Cleaning brush• Rod conveyor belt with additional longitudal rod segments• Customer-specific RAL colour scheme

• Customer-specific RAL colour scheme

• Customer-specific RAL colour scheme• Vibrating screen to separate light con- taminations out of the washing water• Cleaning brush for the washing drum• Belt conveyor for washed light fraction• Input chute for feed material

THIS IS DOPPSTADT

Werner Doppstadt

Umwelttechnik GmbH

Steinbrink 13, D-42555 Velbert

Telefon +49 2052 889-0

E-Mail [email protected]

Web www.doppstadt.de

MORE ADVANTAGESAll machines of the HDS series offer adjustable density separation with a variable density cut and high separation precision.

The main difference between these machines comes down to the throughput capacity.

HDS-S• Quick amortisation

• Low-maintenance

• Continuous operation

• Small installation area

• High throughput

• Plug and play

• Robust

HDS-M• Integrated water circulation

• Cleaning of light fraction

• Robust

• Low running costs

• Plug and play

HDS-L• Integrated water circulation

• Compact and powerful

• 3 processes in one machine: density

separation, washing and water

treatment

• High-speed chassis up to 80 km/h, in

accordance with StVZO (= German

road traffic licensing regulations)

doppstadt.com

The Doppstadt family business based

in Velbert founded in 1965.

Having laid its foundations with the

development of agricultural machinery,

Doppstadt is now a globally active,

leading solution and full-service

provider in all areas of recycling and

environmental technology as well as

recyclable material recovery. Technol-

ogy brings us forward – with this motto,

Doppstadt combines tried and tested

processes with individual complete

solutions, which are defined by innova-

tive processes, unparalleled efficiency

and superior productivity.

With locations in Velbert, Wülfrath,

Calbe, Wilsdruff and Vienna as well as

Rockville (Maryland, USA), Doppstadt

is serving customers in over 40 coun-

tries worldwide with its own dealership

network as well as providing them with

comprehensive services surrounding all

aspects of its products.

the hds-series - doppstadt · the hds series, is the ideal complement for plants that already run...

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